XML 16 R7.htm IDEA: XBRL DOCUMENT v3.20.4
Basis of accounting
6 Months Ended
Jun. 30, 2020
Text block [abstract]  
Basis of accounting
1.
Basis of accounting
The unaudited condensed consolidated interim financial statements are prepared under the historical cost convention, except for the revaluation of certain financial instruments and held for sale assets as disclosed in our accounting policies.